1351 Words6 Pages

1. Which of the following correctly ranks from smallest to largest the measures of central tendency of the data displayed in the histogram below?
*
1. Mode < mean < median.
* 2.
Median < mode < mean.
*
3. Mode < median < mean.
4. The answer cannot be deter
2. The scatter diagram below displays the relationship between age and net worth (in US$ billions) for the world's 20 wealthiest people as reported by Forbes Magazine in 2001.
If 45-year old Bill Gates, the world's wealthiest person, is considered an outlier and removed from the data set, what will be the effect on this relationship?
* 1.
The value of the correlation coefficient will decrease. *
2. The value of the correlation coefficient will increase. * 3.
The value of the correlation coefficient will stay about the same.
4.
The correlation will become perfectly linear.
3. The data in the Excel spreadsheet linked below gives the net worth (in US$ billions) and ages of the world's billionaires as reported by Forbes Magazine in 2001.
The correlation coefficient between age and net worth:. 1.
Is about 0.00. exerc 2.
Is greater than 0.5. *
3. Is less than -0.5.
4. The answer cannot be determined from the information given.
DATA FOR THIS PROBLEM S ATTACHED . NAMED EX NR 6
4. The data in the Excel spreadsheet linked below gives the average monthly price of gold (in dollars per ounce) for the years 1980 to 1983.
In which of the years was the coefficient of variation of gold price the highest?
1. 1980 * 2. 1981 * 3. 1982 4. 1983
DATA ATTACHED: gold-2.prices ex4
5. bizneznuz.com, an online business news agency, conducts a poll. Visitors to the site are invited to click on one of two buttons in order to register that they "agree" or "disagree" with the following statement:

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